This looks super interesting https://dortania.github.io/OpenCore-Legacy-Patcher/

Also wow people are upgrading iMac CPUs

https://lowendmac.com/2018/penryn-t9300-9500-cpu-upgrades-for-the-2007-imac/

I do miss the days of swappable parts especially the soldered ram is such a ripoff just for a few mm of thinness that I don’t need